#header {
    padding: 1em 0;
    position: sticky;
    top: 0;
    left: 0;
    z-index: 99;

    .navbar-inverse {
        border-radius: 0;
        background: transparent;
        border: transparent;

        .navbar-brand {
            color: #fff;
            font-size: 2rem;
            text-transform: uppercase;
        }

        .navbar-nav {
            li {
                a {
                    color: #fff;
                    font-size: 1.2rem;
                    text-transform: uppercase;
                    border-bottom: 3px solid transparent;

                    &:hover {
                        border-bottom: 3px solid #fcac45;
                    }
                }
            }

            @media screen and (max-width: 768px) {
                li {
                    a {
                        text-align: center;
                    }
                }

            }
        }
    }
}

.titles {
    text-align: center;
    font-size: 4.4rem;
    font-family: OSLight;
    text-transform: uppercase;
    color: #222222;
    background: url(../images/title-background.png) no-repeat bottom center;
    padding-bottom: 2rem;
    span {
        font-family: OSBold;
    }

    @media screen and (max-width: 500px) {
        padding-bottom: 2.5rem;
    }
}

#footer {
    background: #000;
    color: #fff;
    padding: 2em 0;

    .container {
        display: flex;
        justify-content: space-between;
        align-items: center;

        .desc {
            font-size: 1.2rem;
            color: #b2b2b2;
            text-align: left;
            width: 50%;
    
            span {
                font-family: OSBold;
            }
        }
    
        .mune {
            width: 50%;
            text-align: right;
    
            a {
                border: 3px solid #b2b2b2;
                width: 3rem;
                height: 3rem;
                border-radius: 50%;
                margin-right: 1rem;
                transition: all 0.1s linear;
                line-height: 2.4rem;
                text-align: center;

                img {
                    width: 70%;
                    height: 70%;
                }
    
                &:hover {
                    box-shadow: 0 0 10px #b2b2b2;
                    transform: translateY(-5px);
                }
            }
        }
        @media screen and (max-width: 768px)  {
            flex-wrap: wrap;
            
            .desc {
                width: 100%;
                text-align: center;
                margin-bottom: 1.5rem;
            }
            .mune {
                width: 100%;
                text-align: center;
            }
        }
    }
}

// 返回顶部
#back {
    
    #gotop {
        position: fixed;
        width: 50px;
        height: 50px;
        right: 1rem;
        bottom: 10rem;

        img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
    }

    @media screen and (max-width: 768px) {
        #gotop {
            right: 1rem;
            bottom: 1rem;
        }
    }
}